SU415075A1 - WORKING CHAIN MILLING OF CRANE AND SHAFT - Google Patents

Description

one

The invention is suitable for the processing of metals by pressure and can be used in cross-rolling mills for profile and smooth products.

The working stand of the mill for cross rolling of the ends of pipes and shafts is known, which contains a frame with a set installed in it, consisting at least of three working shaft: profiles that are shaped according to a given profile of rolling products. A device for cutting small end sections for obtaining products of a dimensional length is not provided in the working stand of known co-construction, therefore an additional area is spent to transfer the workpiece to stand-alone equipment.

The described working stand is characterized in that it is provided with an "Y" on the output side of the stand between two working rolls coaxially with the third working roll with a cutting device, made in the form of a translational movement in the Rolling Axis of Piioli, and at the end which is fixed cutting tool.

FIG. 1 shows the working stand on the side of the billet of the workpiece, general view; and a fkg. 2 - section aa a «a f. 1; “And FIG. 3 is a section along BB in FIG. one; in fig. 4-cutting

tool, cut in the form of a cutter; n and fig. 5 types of “Ons of products rolled in cages.

The described working stand for rolling the ends of the tubes and shafts contains a bed / in which the work rolls 2 are installed. At the exit stand of the stand: In section Inu / between the two work rolls 2, a cut-off device 5 is inserted with an offset in the direction of the rolling axis. The cutting device is made in the form of quill with a cutting tool 4 fixed on it, for example in the form of a disk. A pi hollow is provided with a cavity filled with fluid into which the stem 5 enters.

When the workpiece is fed into the cage, the rolls 2 roll the end of the workpiece, which gradually moves to the zone of action of the cutting tool. After the product profile has been obtained, the task of the workpiece is stopped, i.e., the axial movement of the workpiece is stopped, which, however, continues to be pressed against the rotating roll M due to the remaining in the elastic deformation system with a force not sufficient for rolling, but providing ne | giving away some torque. At the same time (or somewhat earlier, depending on the co-constructive execution of the mechanisms) fluid under pressure is fed into the quill cavity. As a result, n ' 3 with the cutting tool 4 is moved relative to the station /. The cutting tool 5 is supplied to the product, and by its Deployment with simultaneous rotation of the article in the rolls 2, a piece of the profitable part of the rolled end is produced.

Similarly, the cage can be used to cut the product into separate elements.

With a thread cutter, the product moves at a constant speed.

Depending on the operation performed, an appropriate cutting tool is inserted: a disk, a cutter or other.

After rolling one blank, the IB rollers set the next blank, and the cycle repeats.

Subject invention

A working stack of transverse rolling of the ends of pipes and shafts, containing a stack with a set installed in it, consisting of at least three (working rolls profiled according to a given setting 1NO | MU of rolled products, / 1. what, with the purpose of the C01

with a cut-off end of the finished product and an increase in productivity, ohm is provided with a cutting device mounted on the downstream side of the stand between two working rollers with a third working roll about t, made in the form of a reciprocating movement in the direction of the rolling axis, quill which is fixed cutting tool.

B

Srio R

Fig 2

Bb

FIG 4